Mental Math
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Start at 0:50.
Meanwhile I have to look up at the sky when I'm trying to figure out what my current age is.
Link to video -
That is crazy!! I wonder if he is one of those "idiot savant" who are super good with one task but lack social and skills in other tasks.
(In school, for fun, we used to have the top abacus person try to beat someone with a calculator. THey could come pretty close and sometimes win)
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I bet I can still beat him in a drinking contest.
I was going to say arm-wrestling, but he'd probably kick my ass there, too.